Tank



April 2z, 1930.

H. F'ELDMEIERl l TANK 2 sheets-sheet 1 Filed sept. 2:5, 1926 l HVVENTOR.

.A TTORAEZYG".

April 22, 1930.

, H. FELDMEIER 1,755,176

TANK

Filed Sept 23, 1926 2 Sheets-Sheet 2 i HARVEY Fnmmnrnn, MENTS, To CHERRY-runnen. conronATIoN, or WILMINGTON,

go brations or shocks to flcient, practical 3'0 which will provide a tank exceptionally li a5 vnovel features will be particularl Patented Apr. 22, 1930 I um'raul STATES ixxrENfr OFFICE PORATION OF DELAWARE 0F LITTLE FALLS, NEW YORK ASSIGNOB, BY MESNE ASSIGN- DELAWABE, A COB- TANK Application led September 23, 1.926. Serial No. 137,2'ai.`

This invention relates to tanks and particu; llarly to the type designed for the transportation of liquids such as milk.

With the growth of ood roads and the 5 development of automobile trucks, there has been a demand for an eicient motor tank truck for transporting liquids such as milk 1n bulkfand when the liquids are perishable,

such as 'milk, the tank should be insulated so as to prevent temperature changes in the contents while being trans orted. I-Ieretofore glass lined tanks have een employed Y for this purpose, but such tanks have been very heavy and fragile.

An object of this invention is to provide an improved tank for transporting liquids, such asjinilk, in bulk, which will e exceptionally light in weight for a given capacity; which' will not be l which it is subjected during transportation; which will present to the liquid a surface of material unaected by the liquid being transported; and which .will be relatively strong, simple, durable, ef-

and inexpensive.

A further objectof the invention is to provide an limproved met od of making tanks for the transportation of liquids which will be relatively simple and inex ensive alld t in weight, and relatively strong and dura le.

Various other 'objects and advantages will be ,apparent from the following description of an embodiment of the invention,.and the pointed the apout hereinafter in connection wi v pended claims.

In the accompanying drawings Fig. 1 is a side elevation of a tank conco structed in accordance with this invention ;V

Fig. 2 is a transverse, sectional elevation of the same;

.F1g. 3 1s a transverse,

sectional elevation of a portion of the same, but on a'somewhat 45 larger scale;

Fig. 4 is a transverse sectional elevation of another part of the tank; l

Fig. 5 is a longitudinal, sectional elevation through the manhole section of the tank; and

Fig. 6 is a fragmentary, longitudinal seccured to the container broken or injured by v1-r able gasket rings 10 ltainer and the seat strips of sheet cork which .wise to one another and extendlng in direcof the tank. v' i In the illustrated embodiment of the invention, I provide an approximately cylindrical container l of relatively thin sheet material such as sheet metal, and when the tank is to vtion on an enlarged scale, through thewalls l be used for the transportation of milk, cream i or the like, the container 1 ma be formed of nickel sheets' preferably wel ed together. This container 1 is provided in its cylindrical wall with a manhole 2, in which 1s fitted a neck or ring 3 having a peripheral flange4 extending slightly alon and overlapping with the sheet material o joining the opening 2, and this iange is sener, such as by rivets 5 and also and preferably, by welding the edges of the iiange to the container.l

The neck or ring 3 extends outwardly for some distance, and then is provided with -an inwardly extending seat or shoulder 6 which is parallel to the iange 4 but of smaller diameter. The neck 3 extends outwardly for a suitable distance beyond the /seat 6.

drical wall of the container, and isprovided with van opening concentric with the opening 2 of the container, and through which the neck or ring 3 extends, so that the shell wall fits upon the seat 6 of the neckor ring, in spaced relation to the container. Suitable screws 9 pass through the ring v8, and are threaded into the neck or ring 3, so as .to clamp the shell 7 iirml. to the seat 6. Suitmay be disposed between the seat 6 and the shell 7 and between the shell 7 and the clamping ring 8. f

'Ihe container Ais enclosed in a layer of heat insulating material 11, such as sheet cork and mately that of g 6, so that the insulatin layer will ill the space` between the shell and the container. The sheet insulating mathe container 1 ad- 1 in any suitableman-v A i cylindrical jacket shell 7 surrounds the cylinthe thickness of this layer may be approxithe distance between the conterial for the cylindrical portion of the container is preferably provided in the form of tions endwise of the container, so as to correare disposed edgespond somewhat to the staves of a tub or barrel in the arangement Vabout the container. The abutting edges of these strips of insulating material may to fit closely together like the staves of a barrel. The shell 7 is slit endwise at one point of its periphery, and the edge portions l2 and 13, see Fig. 3, along the slit are preferably overlapped with one another.

Adjacent the silt, suitable angular bars or strips 14 are secured to the shell 7, with the bars extending parallel to the slit. Suitable connectors, such as bolts 15, connect the strips 14 and are used to draw the edges of the shell 7 abutting the slit into more or less overlapping relation to one another, so as to contract the shell 7 tightly around the container and insulating layer. The strips of insulat- `lng material, however, are preferably 'conlined to the container 1 before the application of the shell 7 thereto, by suitable straps or-wires 16 which surround the container and layer, as -shown particularly in Fig. 3. When the shell 7 is contracted, it will draw the insulating staves or strips tightly together andpress them firmly against the con tainer 1, so as to stien and reinforce the same, the shell 7 acting somewhat as the hoops of a barrel, except that it is a substantially continuous enclosing jacket.

After the shell 7 has been contracted upon the container and its insulating layer, heads 17 for the shell 7 are placed in the ends of the shell and against the ends of the container l, with the insulating material l1 interposed the container and the between the ends o heads 17, as shown in Fi 1. The heads 17 are provided with perip eral iianges whichy extend peripherallv along the ends of the shell 7, and these flanges may be secured to v the shell 7 by rivets or bolts 18. The heads to the shell 7, because they ena 17 are of a diameter slightly less than the combined diameter of the container l, and its insulating layer, and are secured to the shell 7 after t e latter has been contracted upon the container.

Therefore, the container will be peripherally reinforced tightly throughout, and the heads fit snugly against the ends of the container and layers of.. the insulating material so as -to prevent bul 'ngof the ends of the container. The hea s 17 and the shell 7 together constitute what maybe termed a contractible jacket for enclosing the container and insulating material. Bolts 18v are preferred as the means for fastenin the heads 17 le the heads 17 to be removed more easily incase repairs are necessary;

The jacketed container may be secured to a platform or frame, 19 in any suitable man ner, such as by straps 20 which extend over the tank and have adjustable connections to arms 21 which extend fromb the platform or frame 19. The ring 8 which confines the be bevelled slightly so as shell 7 to the manhole provided with a plurality of upwardly extending bearing lugs 22, to which rods 23'are hinged, as shown in Fig. 4. The rods 23 may be swung upwardly, so as to enter slots or notches in the edges of a cover 24.v The latter is hinged by a pin 25 to hinge ears 26 on the neck 3, so as to swing into and out of closed position over the o enxl end of the manhole ring or neck 3. uts 27 may be threaded upon the projecting ends of the rods 23, so that when the rods are swung into the peripheral notches of the cover, the nuts may be tightened 'to clamp the cover firmly across the open end of the ring 3. A suitable compressible gasket 24a, preferably a flat rubber ring, may be disposed between the cover and the open end of the manhole ring or neck.

To permit a firm closure, the connection bel tween the pivot pin 25 and cover is capable of a limited vertical lost motion, so that the cover may adjust itself uniformly and firmly to the manhole neck 3. The cover may have an open boss 28 which is closed by a removable Ventilating cap 29, as shownl in Fig. 5. The` container l may also have a valve controlled drain pipe 30 extendingA from one end and adjacent its lower edge, this valve controlled pipe 30 extending throu h the insulating layer and one en d head 17 o the jacket.

I have found that the lining or container 1 of the tank may be made of pure nickel sheets of approximately .065 to .078 inch thick and the seams welded, and that the insulating layer may be made of cork sheets approximately two inches in thickness. The stave strips of insulating material may be four or five inches wide, Vor example. The outer Aenclosing jacket `may be of sheet steel with the seams welded or riveted, as desired. The glass lined steel tanks heretofore used for this purpose were from one-fourth to three-eighths inch thick, with the two-inch insulatin layer and enclosing sheet steel jacket. uch a tank was very heavy and cumbersome. By using a lining or container having-walls of one about one-sixteenth inch instead of one-fourth or three-eighths inch, as heretofore, I have made a saving in weight of the tank of from eight hundred to one `thousand pounds on single tanks 'of eight hundred This saving in weight is very important, both as to wear and tear on the truck, and also 0n account of the fact that the taxes and license charges on these trucks are based upon the total weight of the truck in most of the States.

The thin lining of nickel sheets which I eminner shell or container l. While there is less possible contraction of the shell 7 at its ends, it has been found that there is 'suliiclent conto one thousand gallons capacity.

neck or ring 3 may be v vlus traction4 inI the center and into proximity to' the ends, to obtain the desired results.

It will be obvious that various changes in the details which have been herein described and illustrated in order to explain the invention may be made by those skilled in the art within the principle andscope of the invention. as expressed in the appended claims.

` I claim as my invention 1. A tank for transporting liquids under conditions which create torsional stresses in the walls thereof which comprises a container of relatively thin sheet metal, a layer of heat insulating material entirely surrounding said container, and a stress-resisting jacket enclosing said layer and container, and means to draw and hold said jacket in uniformly close contact with said layer.

2. A tank for transporting liquids 'under conditions which create torsional stresses in the walls thereof which comprises an approximately cylindi'icalvcontainerl of relatively thin sheet material, a layer of heat insulating material covering said'cont'ainer, including its entire underside thereof, an approximate- 1y cylindrical stress-resisting jacket enclosing the insulating layer and container including the bottom of said container and having its cylindrical wall slit lengthwise, with the edges abutting the'slit overlapping one another, and means for drawing the overlapping edges intomore or less overlapping relation so as to compress and hold the insulating layer in uniformly close contact with the cylindrical container wall to stifen 3. A tank for transporting liquids under conditions which create torsional stresses in the walls thereof which comprises an approximately cylindrical container of relatively thin sheet material, a layer of insulating material covering the cylindrical section and end ywalls of said container, an approximately cylindrical stress-resisting jacket entirely encircling the insulating layer and container and approximately co-exte'nsive in length with said container and insulating material, said jacket being slit lengthwise with the edges of the slit overlapping one another,

means adjacent the slit for drawing the edges adjoining the slit into more or less overlapping engagement with one another, so as to draw and hold the insulating layer uniformly in closecontact withl the container, and end wallsfor said jacket secured to the contracted ends of said jacket.

4. A tank for transporting liquids which comprises a horizontally disposed container of relatively thin material having an opening v in the top wall, a manhole ring secured 1n said opening and extending outwardly therefrom, said ring having a yperipheral flange portion for attachment to a face of the conjecting portion an inwardly extending annusaid flange, a jacket of sheet metal enclosing the `container and resting upon said seat, means for securing the jacket to said seat, and sheet insulating material compressed between said jacket and container and abutting edgewise around said ring.

5. The method of producing tanks for transporting liquids which comprises enclosing an approximately cylindrical container of relatively thin material with a layer of heat insulating material, peripherally encircling said container and layer with an approximately cylindrical shell slit lengthwise, drawing said shell tightly about the insulating layer and container to press the insulating layer firmly against the container wall to stifl'en the same, and after the shell has been contracted securing-to the ends of said shell heads of a diameter slightly less than the combined diameter of the container and insulating layer.

HARVEY FELDMEIER.

the same. i

tainer wall and having on the outward `y pro- 

